• Title/Summary/Keyword: Urban ecological environment

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Determining the Effect of Green Spaces on Urban Heat Distribution Using Satellite Imagery

  • Choi, Hyun-Ah;Lee, Woo-Kyun;Byun, Woo-Hyuk
    • Asian Journal of Atmospheric Environment
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    • v.6 no.2
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    • pp.127-135
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    • 2012
  • Urbanization has led to a reduction in green spaces and thus transformed the spatial pattern of urban land use. An increase in air temperature directly affects forest vegetation, phenology, and biodiversity in urban areas. In this paper, we analyze the changing land use patterns and urban heat distribution (UHD) in Seoul on the basis of a spatial assessment. It is necessary to monitor and assess the functions of green spaces in order to understand the changes in the green space. In addition, we estimated the influence of green space on urban temperature using Landsat 7 Enhanced Thematic Mapper Plus (ETM+) imagery and climatic data. Results of the assessment showed that UHD differences cause differences in temperature variation and the spatial extent of temperature reducing effects due to urban green space. The ratio of urban heat area to green space cooling area increases rapidly with increasing distance from a green space boundary. This shows that urban green space plays an important role for mitigating urban heating in central areas. This study demonstrated the importance of green space by characterizing the spatiotemporal variations in temperature associated with urban green spaces.

A Study on the Urban Ecosystem Assessment for 31 Cities & Counties around the Capital (수도권 31개 시·군의 도시생태계 현황 평가에 관한 연구)

  • Sung, Hyun-Chan;Hwang, So-Young
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.15 no.5
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    • pp.165-176
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    • 2012
  • The objective of this study is to set urban ecosystem assessment indicators, assess the status of the urban ecosystems in 31 cities & counties in the capital region and based on which, to examine an improvement plan to resolve problems and raise quality and quantity of urban ecosystems. The study showed that the ecological base of 31 cities & counties was 48% on average, which indicates that their ecological property is the middle class. Their natural-ecological function was 63% and environmental-control function was 25%, showing that environment-control function was poor. Therefore, going forward, urban ecological base should be further improved. When securing an ecological base, creation techniques should be able to further enhance environmental-control function along with natural-ecological function. Also, additional effort should be made to conserve areas with high ecological value as much as possible and increase vegetation vitality by replacing tree species.

A Study on the Environmental Assessment Criteria for Designation of Conservation Zones in Urban Area (환경성 평가시 도시보전용도지역 확보기준에 관한 연구)

  • Lee, Sang-Moon;Jeon, Young-Ok
    • Journal of Environmental Impact Assessment
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    • v.14 no.6
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    • pp.403-413
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    • 2005
  • The environmental conservation-targeted zoning in urban planning process has been functioned as securing a ecological core in urban green spaces management. Hence, the designation of conservation zones in land use planning is considered as a key task to achieve the sustainability of urban planning. The recently introduced pre-environmental review system for the proposed urban plan, by which the conservative measures for urban ecosystem and landscape are suggested in aspect of environmental impact mitigation, has played an active role in enhancing the environmental performance degraded by wide range of development pressure. This study is aimed at drawing out of objective criteria for designation of environmental conservation zones, which can be applied to urban planning establishment and also to environmental assessment process. To achieve this goal, the study adopted the following methods; pre-study review, analysis of existing official opinion statements released by the Ministry of Environment, contents analysis of related laws, and experts' panel discussions on the finally arranged criteria. The results of this research can be summarized as follows: First, the total criteria of 48 are drown out with categorizing into environment-ecological and socio-cultural sectosr. Second, the environment-ecological part is composed of 33 criteria such as vegetation, animal, geomorphology, watershed, environmental land suitability, and etc. Here, the Degree of Ecological Function, Degree of Environmental Land Suitability, and Vegetation Map are mainly utilized. Third, the 15 socio-cultural criteria relating to the history, social ecology and landscape have such components as forest around relics, Seo-won(school), castle, tomb, landmark, skyline, natural landscape, and etc. Forth, these individual criteria can be applied to designation of each conservation zones among total of 11 conservation areas(or districts).

The Visitors Characteristics of Urban Ecological Park - The Cases of Gildong Ecological Park, Yeouido Tributary Ecological Park - (도시 생태공원 이용자 특성 연구 - 길동생태공원, 여의도샛강생태공원을 사례로 -)

  • Kim, Eun-Young;Lee, Jung-A;Kim, Hyoung-Gon;Chon, Jin-Hyung
    • Journal of the Korean Institute of Landscape Architecture
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    • v.42 no.1
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    • pp.64-74
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    • 2014
  • Ecological parks enable the sustainable use of natural resources and can be used as a place for site based environmental education. This study presented an opportunity to expand the scope of user perceptions and leisure benefits into urban ecological parks. However, in-depth studies which are aimed at eco-park visitors seeking the leisure benefits of the eco experience programs are lacking. The primary purpose of this study was to examine the urban ecological park user' characteristics which were derived by analyzing the leisure benefits and attitudes for the environment. Also, the attitudes about the environment, and the leisure benefits of visiting urban ecological parks was found to influence visitors' overall satisfaction. To accomplish the purposes of this study, a questionnaire survey with 282 samples was carried out on the urban ecological park(Gildong ecological park, Yeouido tributary ecology park). The results of the analyses are as following: urban ecological park visitors had a positive attitude about the environment, and felt satisfied by the visitors' leisure benefits. The study also examined the relationships between visitors' expectations of the leisure benefits both before visiting and after visiting. The results showed that ecological park visitors had greater expectations regarding the leisure benefits of the ecological program. Leisure benefits have a positive influence on overall satisfaction, and a positive attitude for the environment does not affect satisfaction. This study reaches the conclusion that the ecology experience program utilizing ecological parks is very effective with regard to overall satisfaction in urban areas toward the general environment and ecological parks. One of the major implications of this study is to offer a way to improve user leisure benefits and promote ecological programs by developing ecological parks for the future.

Issues and Trends concerning of Ecological Landscape Planning and Design with ESSD (지속 가능한 개발 및 생태조경분야의 연구경향과 과제)

  • 이명우
    • Journal of the Korean Institute of Landscape Architecture
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    • v.32 no.1
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    • pp.139-156
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    • 2004
  • All Papers on Ecological Landscape Degign in KILA from 1973 to 2003 are listed herein for finding research issues and trends. The emerging field of Ecological studies of landscape design is based on Landscape Ecology and Watershed Ecology, the Principles of which can be applied to surveying and evaluation, Planning and design, construction and management focusing preservation of wildlife habitat and niche. This field can be classified into six categories: 1. Sustainable site planning and index, 2. Ecological planning process and regulation, 3. landscape ecology and biotope map, 4. Watershed and eco corridor project, 5. Urban forestry and environment, and 6. artificial ground and restoration ecology. The following is the summary of the findings from Paper review: 1. Sustainable index shall be studied about more specified sites. Water recycling facilities, and reservation wet land need to be studied. 2. Policy and legislation research on Ecological design shall be researched by expanding of the application field. Nature park planning and management fields shall be considered as the main theme of green networking Parts. 3. Landscape Ecological studies should be connected to practical surveying data, e.g. the eco-maps published by Environment Ministry. Traditional culture and science should be joined with the modem science. 4. Eco-corridor planning will go with the scenarios and theories of watershed ecology. 5. Urban forestry shall be studied with the wildlife's behavior and habitat. 6. Restoration engineering techniques should be reconsidered with the wildlife's existence and environmental affiliation.

A Study on the Planning Characteristics of Ecological City - A Case Study of HafenCity, Hamburg - (생태도시 구축을 위한 계획 특성에 관한 연구 - 독일 함부르크 하펜시티 사례를 중심으로 -)

  • Park, Jong Ki;Chin, Kyung Il
    • KIEAE Journal
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    • v.12 no.4
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    • pp.3-12
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    • 2012
  • Nowadays, interests on Eco-city planning as Solution for problems of energy demand and environmental change has grown. so Eco-city planning became a major political topic for urban planning and urban design in many advanced nation cities. The purpose of this study is to find out the organized characteristics of Eco-City planning by analyzing successful overseas case where wasted historic port area in city is are regenerated with a environment-friendly concept for Eco-City "HafenCity". It is located on Hamburg-mitte in Hamburg, Germany and is currently the largest construction project in Europe. HafenCity as Home to about 12,000 and the workplace of 40,000 people is being created to accommodate a variety of uses including residential buildings, business, office and retail space as well as cultural and leisure facilities. First of all, HafenCity impresses because of its size as well as because of its Urban planning for eco-city. It presents the excellent change from wasted historic port to the ecological urban space.

Assessing conservation priorities of unexecuted urban parks in Seoul using ecological network and accessibility analyses (생태네트워크와 접근성 분석에 의한 서울시 미집행 도시공원의 보전 우선순위 평가)

  • Kang, Wan-Mo;Song, Young-Keun;Sung, Hyun-Chan;Lee, Dong-Kun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.21 no.2
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    • pp.53-64
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    • 2018
  • This study aims to quantitatively evaluate the conservation priorities of unexecuted urban parks in Seoul both from an ecological and public perspective. To this end, two methodologies, ecological network analysis based on graph and circuit theory and accessibility analysis, were employed in order to assess ecological connectivity of and public accessibility to unexecuted parks, respectively. This study applied linkage-mapping methods (shortest path and current flow betweenness centrality) of connectivity analysis to an integrated map of landscape permeability. The population-weighted accessibility to unexecuted parks was measured based on a negative exponential distance decay function. As a result, for both ecological connectivity and accessibility, Gwanaksan, Suraksan, and Bulamsan urban natural parks are found to be the most important (rank 1-3) to be conserved. For these sites, inner park areas with conservation priorities for connectivity and accessibility were identified. The findings of the study can be used for giving conservation priority to the unexecuted urban parks in terms of long-term sustainable urban planning.

A Study on Design Method of Water Space in Ecological Park -focused on the ecological park in Seoul- (생태 공원내 수공간 조성 기법에 관한 연구 -서울특별시 생태 공원을 중심으로-)

  • Jang, Byung-Gyu;Sung, Lee-Yong;Lee, So-Yeon;Kim, Jung-Eun;Lee, Sang-Jun
    • KIEAE Journal
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    • v.2 no.4
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    • pp.49-56
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    • 2002
  • The quality of urban environment where large population reside is becoming more vitally important than ever. Recently the city of Seoul has launched a 'green city' program converting number of city owned lots into urban parks. In this study, we first investigate four recently opened city parks with water ponds in Seoul. This study then classify these parks according to their respective designs, particularly addressing design and environmental impacts by water features. From these exercises, we derive the following interim findings: 1. Design patterns of waterscape is changing. 2. Water in the city park is a major design feature. 3. Design methodology for city parks must be studied further.

A Study on Utilization Plan and Assessment of Ecological Carrying Capacity of Asan City - Focused on the Ecological Footprint Survey - (아산시 생태환경용량 평가를 통한 도시계획 활용방안 연구 - 생태발자국을 중심으로 -)

  • Joo, YongJoon;Sagong, Hee;Lee, SangYoon
    • Journal of Wetlands Research
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    • v.19 no.4
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    • pp.523-532
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    • 2017
  • Environmental problems in urban spaces tend to result from excessive use of resources faster than the ecosystem can recover itself. In order to address this problem, city or municipal governments tend to devise plans and policies to lead development within their ecological carrying capacity. This study computes ecological capacity of Asan city, Province Chung Nam, South Korea through applying the concept of ecological footprint. This study finds ecological footprint and deficit of Asan city in 2015 were 5.12 and -4.99, respectively. From 2001 to 2015, Asan city experienced not only an 81% increase of ecological footprint, but also a 190% increase of ecological deficit. Such results suggest that Asan city has experienced a steady increase of resource consumption due to population increase and urban growth, indicating that loss of ecological spaces such as green space, farmland, wetland and so on restoring the ecosystem has been accelerated. Therefore, in order to promote sustainable development, Asan city should not only protect green space, farmland, wetland, and so on but also create urban growth plans and policies taking into account its environmental capacity of the city. This study provides suggestions for Asan city to lead urban growth within its environmental capacity by applying ecological deficit.

A Study on the Redevelopment of Urban Residential Environment through Cultural and Ecological Design :Focusing on the redevelopment site at Hwamyeong-dong, Busan (문화 생태적 디자인을 통한 도시노후지역 재개발 연구 : 화명동 재개발 예정지를 중심으로)

  • Bang, jeong ah;Lee, dong hun
    • Proceedings of the Korea Contents Association Conference
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    • 2009.05a
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    • pp.967-972
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    • 2009
  • The present urban redevelopment has caused many problems. The truth is that the improvement of residential environment in this country has resulted in high-rise apartment buildings of the same form, without regard for vestiges of previous residents and regional characteristics. If redevelopment should be continued in a proper way to improve the right to adequate housing, a new form of urban design will be required, solving existing problems. For this, the cultural and ecological elements of the redevelopment site to be conserved and developed should be found and designed. Consequently, this study focuses on the cases of domestic and overseas urban design that cultural and ecological elements have been applied to redevelopment, and suggests Hwamyeong-dong, a deteriorated area in Busan, to design from a cultural and ecological point of view.

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